EP 2599900 A1 20130605 - Regenerated cellulose fibre
Title (en)
Regenerated cellulose fibre
Title (de)
Regenerierte Cellulosefaser
Title (fr)
Fibre de cellulose régénérée
Publication
Application
Priority
EP 11191093 A 20111129
Abstract (en)
Regenerated cellulose fiber in the form of a solid viscose flat fiber, is claimed. The fiber is made of more than 98% cellulose. The ratio of the width to the thickness of fiber is >= 10:1. The fiber surface is substantially smooth and the fiber is transparent. Independent claims are also included for: (1) fiber bundle comprising a number of cellulose fibers; (2) producing the cellulose fiber or the fiber bundle, comprising providing a viscose spinning mass, spinning the viscose spinning mass through at least one slot-shaped orifice of a spinneret in a spinning bath to form filaments, where the viscose spinning mass contains a coagulation retardant, preferably polyethylene glycol, where the ratio of length to width of the nozzle slot is 10:1-30:1, preferably 15:1-25:1, and a content of sulfuric acid in the spinning bath is 110-140 g/l, preferably 120-130 g/l, removing the spun filaments with a nozzle lag of 2-3, and stretching the spun filaments after leaving the spinning bath in a proportion of 20-35%, preferably 25-35%; and (3) a paper comprising cellulose fiber and fiber bundle.
Abstract (de)
Die Erfindung betrifft eine regenerierte Cellulosefaser in Form einer massiven Viskoseflachfaser mit folgenden Eigenschaften: - Die Faser besteht zu mehr als 98% aus Cellulose - Das Verhältnis von Breite B zu Dicke D der Faser ist 10:1 oder größer - Die Faseroberfläche ist im wesentlichen glatt - Die Faser ist im wesentlichen transparent Die erfindungsgemäße Faser eignet sich insbesondere zur Herstellung von Papier.
IPC 8 full level
D01D 5/06 (2006.01); D01D 5/253 (2006.01); D01F 2/08 (2006.01); D21H 13/08 (2006.01)
CPC (source: EP US)
D01D 5/253 (2013.01 - EP US); D01F 1/00 (2013.01 - US); D01F 2/08 (2013.01 - EP US); D04H 1/4258 (2013.01 - EP US); D04H 1/43912 (2020.05 - EP US); D04H 3/013 (2013.01 - EP US); D04H 3/015 (2013.01 - US); D04H 3/018 (2013.01 - EP US); D21H 13/08 (2013.01 - EP US); D21H 15/02 (2013.01 - EP US); Y10T 428/2973 (2015.01 - EP US); Y10T 442/611 (2015.04 - EP US)
Citation (applicant)
- WO 2006134132 A1 20061221 - KELHEIM FIBRES GMBH [DE], et al
- GB 945306 A 19631223 - LIPACO SA
- US 3156605 A 19641110 - ANDERER JOSEPH H, et al
- US 3318990 A 19670509 - YOICHI KAJITANI
- GB 1063217 A 19670330 - KURASHIKI RAYON KK
- DE 1254955 B 19671123 - KURASHIKI RAYON CO
- GB 1064475 A 19670405 - KURASHIKI RAYON KK
- C.R. WOODINGS; A. J. BARTHOLOMEW: "The manufacture properties and uses of inflated viscose rayon fibres", TAPPI NONWOVENS SYMPOSIUM, 1985, pages 155 - 165, Retrieved from the Internet <URL:http://www.nonwoven.co.uk/publications cat4.php>
Citation (search report)
- [XAI] DD 230030 A1 19851120 - SCHWARZA CHEMIEFASER [DD]
- [A] DE 1494762 B1 19700430 - SCHWARZA CHEMIEFASER
- [A] DD 41397 A1 19650915
- [A] WO 2010071906 A1 20100701 - CHEMIEFASER LENZING AG [AT], et al
- [A] US 3565652 A 19710223 - BURNET STAATS G, et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2599900 A1 20130605; CN 103958749 A 20140730; CN 103958749 B 20161005; EP 2785899 A1 20141008; EP 2785899 B1 20170104; ES 2621008 T3 20170630; JP 2014534360 A 20141218; JP 6134327 B2 20170524; TW 201339384 A 20131001; TW I626342 B 20180611; US 11149367 B2 20211019; US 2014308870 A1 20141016; WO 2013079305 A1 20130606
DOCDB simple family (application)
EP 11191093 A 20111129; CN 201280058669 A 20121112; EP 12783245 A 20121112; EP 2012072387 W 20121112; ES 12783245 T 20121112; JP 2014543824 A 20121112; TW 101143261 A 20121120; US 201214359781 A 20121112